We paid cash in the hope that we can get a 15% .A. by countB. with accountC. in di

问题补充：

We paid cash in the hope that we can get a 15% .

A. by , count

B. with , account

C. in , discount

D. in , charge

答案：

A. by , count

B. with , account

(答案→)C. in , discount

D. in , charge

解析：句意：我们用现金支付，希望能得到15%的折扣。第一空填in，in cash用现金；by check用支票；第二空填discount打折，折扣。account账户；charge费用，收费；count数，计数； 所以选C。